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Finding the Fourth Proportional to 30,951.78, 46,421.73 and 8,759.79

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Solution

The fourth proportional to 30,951.78, 46,421.73 and 8,759.79 is: 13,138.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,951.78 : 46,421.73 = 8,759.79 : x
  2. Step 2: Convert to fraction form
    30,951.78/46,421.73 = 8,759.79/x
  3. Step 3: Cross multiply
    30,951.78x = 46,421.73 × 8,759.79
  4. Step 4: Simplify right side
    30,951.78x = 406,644,606.24
  5. Step 5: Solve for x
    x = 406,644,606.24/30,951.78
  6. Step 6: Final answer
    x = 13,138.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.